Convert APR to APY or back at any compounding frequency, with daily rate, doubli...
https://saylorinnovations.com/api/defi/apr-apyOverview
Convert APR to APY or back at any compounding frequency, with daily rate, doubling time and projected compounded versus simple earnings on a principal.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-20 15:24:34
Health
Status
healthy
Latency (p50)
362ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-28 15:24:12
Last Healthy
2026-10-28 15:24:12
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"apr_percent": "12",
"compounds_per_year": "365",
"days": "180",
"principal": "5000"
},
"type": "http"
}
Output Schema
{
"example": {
"apr_percent": 12,
"apy_percent": 12.747462,
"balance_compounded": 5304.7692,
"balance_simple_apr": 5295.8904,
"compounding": "365 times per year",
"compounding_gain_percent_points": 0.747462,
"daily_rate_percent": 0.03287671,
"days": 180,
"doubling_time_days": 2108.7,
"earnings_compounded": 304.7692,
"earnings_simple_apr": 295.8904,
"note": "APY includes compounding, APR does not. Variable DeFi yields change constantly, so treat the projection as a scenario.",
"principal": 5000,
"source": "Compound interest conversion formulas"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 15:24:12 | healthy | 402 | 1934ms | |
| 2026-10-28 14:18:36 | healthy | 402 | 344ms | |
| 2026-10-28 06:59:57 | healthy | 402 | 1594ms | |
| 2026-10-28 05:37:59 | healthy | 402 | 200ms | |
| 2026-10-28 04:40:02 | healthy | 402 | 284ms | |
| 2026-10-28 03:46:18 | healthy | 402 | 531ms | |
| 2026-10-28 02:46:07 | healthy | 402 | 1006ms | |
| 2026-10-28 01:42:02 | healthy | 402 | 274ms | |
| 2026-10-28 00:35:47 | healthy | 402 | 226ms | |
| 2026-10-27 23:39:33 | healthy | 402 | 267ms | |
| 2026-10-27 22:53:33 | healthy | 402 | 387ms | |
| 2026-10-27 21:42:40 | healthy | 402 | 362ms | |
| 2026-10-27 20:27:43 | healthy | 402 | 365ms | |
| 2026-10-27 19:22:19 | healthy | 402 | 377ms | |
| 2026-10-26 08:13:09 | healthy | 402 | 289ms | |
| 2026-10-25 21:35:39 | healthy | 402 | 292ms |